How many movies have Haruo Tanaka and Iwaji Hiraoka collaborated on?

They have worked on 3 movies together! Their first movie together was 音楽大進軍 (1943) while their highest rated movie together was Conduct Report on Professor Ishinaka (1950). They have not worked together since Miki, the Swordman (1951). They are most known for their drama films together.